> ## Documentation Index > Fetch the complete documentation index at: https://voltaire.tevm.sh/llms.txt > Use this file to discover all available pages before exploring further. # BrandedFeeMarket > Auto-generated API documentation [**@tevm/voltaire**](../../index.mdx) *** [@tevm/voltaire](../../index.mdx) / [index](../index.mdx) / BrandedFeeMarket # BrandedFeeMarket ## Type Aliases ### BlobTxFee > **BlobTxFee** = [`TxFee`](#txfee) & `object` Defined in: [src/primitives/FeeMarket/BlobTxFee.ts:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BlobTxFee.ts#L6) Calculated blob transaction fee breakdown #### Type Declaration ##### blobGasPrice > **blobGasPrice**: `bigint` Blob gas price paid (wei per blob gas) ##### totalBlobFee > **totalBlobFee**: `bigint` Total blob fee (wei) *** ### BlobTxFeeParams > **BlobTxFeeParams** = [`TxFeeParams`](#txfeeparams) & `object` Defined in: [src/primitives/FeeMarket/BlobTxFeeParams.ts:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BlobTxFeeParams.ts#L6) Blob transaction fee parameters (EIP-4844) #### Type Declaration ##### blobBaseFee > **blobBaseFee**: `bigint` Current blob base fee (wei) ##### blobCount > **blobCount**: `bigint` Number of blobs in transaction ##### maxFeePerBlobGas > **maxFeePerBlobGas**: `bigint` Maximum fee per blob gas (wei) *** ### BrandedState > **BrandedState** = `object` Defined in: [src/primitives/FeeMarket/BrandedState.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BrandedState.ts#L4) Complete fee market state for a block #### Properties ##### baseFee > **baseFee**: `bigint` Defined in: [src/primitives/FeeMarket/BrandedState.ts:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BrandedState.ts#L10) Base fee per gas (wei) ##### blobGasUsed > **blobGasUsed**: `bigint` Defined in: [src/primitives/FeeMarket/BrandedState.ts:14](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BrandedState.ts#L14) Blob gas used in block ##### excessBlobGas > **excessBlobGas**: `bigint` Defined in: [src/primitives/FeeMarket/BrandedState.ts:12](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BrandedState.ts#L12) Excess blob gas accumulated ##### gasLimit > **gasLimit**: `bigint` Defined in: [src/primitives/FeeMarket/BrandedState.ts:8](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BrandedState.ts#L8) Gas limit of block ##### gasUsed > **gasUsed**: `bigint` Defined in: [src/primitives/FeeMarket/BrandedState.ts:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BrandedState.ts#L6) Gas used in block *** ### Eip1559State > **Eip1559State** = `object` Defined in: [src/primitives/FeeMarket/Eip1559State.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/Eip1559State.ts#L4) EIP-1559 specific state #### Properties ##### baseFee > **baseFee**: `bigint` Defined in: [src/primitives/FeeMarket/Eip1559State.ts:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/Eip1559State.ts#L10) Base fee per gas (wei) ##### gasLimit > **gasLimit**: `bigint` Defined in: [src/primitives/FeeMarket/Eip1559State.ts:8](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/Eip1559State.ts#L8) Gas limit of block ##### gasUsed > **gasUsed**: `bigint` Defined in: [src/primitives/FeeMarket/Eip1559State.ts:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/Eip1559State.ts#L6) Gas used in block *** ### Eip4844State > **Eip4844State** = `object` Defined in: [src/primitives/FeeMarket/Eip4844State.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/Eip4844State.ts#L4) EIP-4844 specific state #### Properties ##### blobGasUsed > **blobGasUsed**: `bigint` Defined in: [src/primitives/FeeMarket/Eip4844State.ts:8](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/Eip4844State.ts#L8) Blob gas used in block ##### excessBlobGas > **excessBlobGas**: `bigint` Defined in: [src/primitives/FeeMarket/Eip4844State.ts:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/Eip4844State.ts#L6) Excess blob gas accumulated *** ### State > **State** = `object` Defined in: [src/primitives/FeeMarket/FeeMarketType.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarketType.ts#L4) Complete fee market state for a block #### Properties ##### baseFee > **baseFee**: `bigint` Defined in: [src/primitives/FeeMarket/FeeMarketType.ts:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarketType.ts#L10) Base fee per gas (wei) ##### blobGasUsed > **blobGasUsed**: `bigint` Defined in: [src/primitives/FeeMarket/FeeMarketType.ts:14](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarketType.ts#L14) Blob gas used in block ##### excessBlobGas > **excessBlobGas**: `bigint` Defined in: [src/primitives/FeeMarket/FeeMarketType.ts:12](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarketType.ts#L12) Excess blob gas accumulated ##### gasLimit > **gasLimit**: `bigint` Defined in: [src/primitives/FeeMarket/FeeMarketType.ts:8](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarketType.ts#L8) Gas limit of block ##### gasUsed > **gasUsed**: `bigint` Defined in: [src/primitives/FeeMarket/FeeMarketType.ts:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarketType.ts#L6) Gas used in block *** ### TxFee > **TxFee** = `object` Defined in: [src/primitives/FeeMarket/TxFee.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/TxFee.ts#L4) Calculated transaction fee breakdown #### Properties ##### baseFee > **baseFee**: `bigint` Defined in: [src/primitives/FeeMarket/TxFee.ts:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/TxFee.ts#L10) Base fee paid (wei per gas) ##### effectiveGasPrice > **effectiveGasPrice**: `bigint` Defined in: [src/primitives/FeeMarket/TxFee.ts:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/TxFee.ts#L6) Effective gas price paid (wei per gas) ##### priorityFee > **priorityFee**: `bigint` Defined in: [src/primitives/FeeMarket/TxFee.ts:8](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/TxFee.ts#L8) Priority fee paid (wei per gas) *** ### TxFeeParams > **TxFeeParams** = `object` Defined in: [src/primitives/FeeMarket/TxFeeParams.ts:4](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/TxFeeParams.ts#L4) Transaction fee parameters #### Properties ##### baseFee > **baseFee**: `bigint` Defined in: [src/primitives/FeeMarket/TxFeeParams.ts:10](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/TxFeeParams.ts#L10) Current block base fee (wei) ##### maxFeePerGas > **maxFeePerGas**: `bigint` Defined in: [src/primitives/FeeMarket/TxFeeParams.ts:6](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/TxFeeParams.ts#L6) Maximum fee per gas willing to pay (wei) ##### maxPriorityFeePerGas > **maxPriorityFeePerGas**: `bigint` Defined in: [src/primitives/FeeMarket/TxFeeParams.ts:8](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/TxFeeParams.ts#L8) Maximum priority fee per gas (tip to miner, wei) ## Variables ### Eip1559 > `const` **Eip1559**: `__module` = `Eip1559Constants` Defined in: [src/primitives/FeeMarket/FeeMarket.js:39](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarket.js#L39) *** ### Eip4844 > `const` **Eip4844**: `__module` = `Eip4844Constants` Defined in: [src/primitives/FeeMarket/FeeMarket.js:40](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarket.js#L40) *** ### State > `const` **State**: `object` Defined in: [src/primitives/FeeMarket/FeeMarket.js:83](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/FeeMarket.js#L83) State namespace with convenience methods #### Type Declaration ##### getBlobBaseFee() > **getBlobBaseFee**: (`this`) => `bigint` Get current blob base fee ###### Parameters ###### this [`State`](#state) ###### Returns `bigint` ##### getGasTarget() > **getGasTarget**: (`this`) => `bigint` Get gas target for block ###### Parameters ###### this [`State`](#state) ###### Returns `bigint` ##### isAboveBlobGasTarget() > **isAboveBlobGasTarget**: (`this`) => `boolean` Check if block is above blob gas target ###### Parameters ###### this [`State`](#state) ###### Returns `boolean` ##### isAboveGasTarget() > **isAboveGasTarget**: (`this`) => `boolean` Check if block is above gas target ###### Parameters ###### this [`State`](#state) ###### Returns `boolean` ##### next() > **next**: (`this`) => [`State`](#state) Calculate next block's fee market state ###### Parameters ###### this [`State`](#state) ###### Returns [`State`](#state) ## Functions ### BaseFee() > **BaseFee**(`parentGasUsed`, `parentGasLimit`, `parentBaseFee`): `bigint` Defined in: [src/primitives/FeeMarket/BaseFee.js:29](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BaseFee.js#L29) Calculate next block's base fee using EIP-1559 formula (constructor form) Formula: * gasTarget = gasLimit / 2 * If gasUsed > gasTarget: baseFee increases (up to 12.5%) * If gasUsed \< gasTarget: baseFee decreases (up to 12.5%) * If gasUsed == gasTarget: baseFee stays same * Always: baseFee >= MIN\_BASE\_FEE (7 wei) #### Parameters ##### parentGasUsed `bigint` Gas used in parent block ##### parentGasLimit `bigint` Gas limit of parent block ##### parentBaseFee `bigint` Base fee of parent block (wei) #### Returns `bigint` Next block's base fee (wei) #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; // Block at target (50% full): base fee unchanged const baseFee1 = FeeMarket.BaseFee(15_000_000n, 30_000_000n, 1_000_000_000n); // baseFee1 === 1_000_000_000n ``` *** ### BlobBaseFee() > **BlobBaseFee**(`excessBlobGas`): `bigint` Defined in: [src/primitives/FeeMarket/BlobBaseFee.js:25](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/BlobBaseFee.js#L25) Calculate blob base fee using EIP-4844 formula (constructor form) Formula: fakeExponential(MIN\_BLOB\_BASE\_FEE, excessBlobGas, BLOB\_BASE\_FEE\_UPDATE\_FRACTION) Uses Taylor series to approximate: MIN\_BLOB\_BASE\_FEE \* e^(excessBlobGas / UPDATE\_FRACTION) #### Parameters ##### excessBlobGas `bigint` Excess blob gas from previous blocks #### Returns `bigint` Blob base fee (wei per blob gas) #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; // No excess: minimum fee const fee1 = FeeMarket.BlobBaseFee(0n); // fee1 === 1n ``` *** ### calculateBlobTxFee() > **calculateBlobTxFee**(`params`): [`BlobTxFee`](#blobtxfee) Defined in: [src/primitives/FeeMarket/calculateBlobTxFee.js:28](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/calculateBlobTxFee.js#L28) Calculate blob transaction fee (standard form) Combines regular gas fee with blob gas fee. #### Parameters ##### params [`BlobTxFeeParams`](#blobtxfeeparams) Blob transaction fee parameters #### Returns [`BlobTxFee`](#blobtxfee) Calculated fee breakdown including blob fees #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const fee = FeeMarket.calculateBlobTxFee({ maxFeePerGas: 2_000_000_000n, maxPriorityFeePerGas: 1_000_000_000n, baseFee: 800_000_000n, maxFeePerBlobGas: 10_000_000n, blobBaseFee: 5_000_000n, blobCount: 3n }); ``` *** ### calculateExcessBlobGas() > **calculateExcessBlobGas**(`parentExcessBlobGas`, `parentBlobGasUsed`): `bigint` Defined in: [src/primitives/FeeMarket/calculateExcessBlobGas.js:23](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/calculateExcessBlobGas.js#L23) Calculate excess blob gas for next block using EIP-4844 formula (standard form) Formula: max(0, parentExcessBlobGas + parentBlobGasUsed - TARGET\_BLOB\_GAS\_PER\_BLOCK) #### Parameters ##### parentExcessBlobGas `bigint` Excess blob gas from parent block ##### parentBlobGasUsed `bigint` Blob gas used in parent block #### Returns `bigint` Excess blob gas for next block #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; // Below target: no excess const excess1 = FeeMarket.calculateExcessBlobGas(0n, 131072n); // 1 blob // excess1 === 0n ``` *** ### calculateTxFee() > **calculateTxFee**(`params`): `any` Defined in: [src/primitives/FeeMarket/calculateTxFee.js:25](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/calculateTxFee.js#L25) Calculate effective transaction fee (standard form) Formula: * effectiveGasPrice = min(maxFeePerGas, baseFee + maxPriorityFeePerGas) * priorityFee = effectiveGasPrice - baseFee #### Parameters ##### params `any` Transaction fee parameters #### Returns `any` Calculated fee breakdown #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const fee = FeeMarket.calculateTxFee({ maxFeePerGas: 2_000_000_000n, maxPriorityFeePerGas: 1_000_000_000n, baseFee: 800_000_000n }); ``` *** ### canIncludeTx() > **canIncludeTx**(`params`): `boolean` Defined in: [src/primitives/FeeMarket/canIncludeTx.js:25](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/canIncludeTx.js#L25) Check if transaction can be included in block (standard form) Transaction is valid if: * maxFeePerGas >= baseFee * For blob txs: maxFeePerBlobGas >= blobBaseFee #### Parameters ##### params `any` Transaction fee parameters #### Returns `boolean` true if transaction meets minimum fee requirements #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const canInclude = FeeMarket.canIncludeTx({ maxFeePerGas: 1_000_000_000n, maxPriorityFeePerGas: 100_000_000n, baseFee: 900_000_000n }); ``` *** ### gweiToWei() > **gweiToWei**(`gwei`): `bigint` Defined in: [src/primitives/FeeMarket/gweiToWei.js:17](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/gweiToWei.js#L17) Convert gwei to wei #### Parameters ##### gwei `number` Amount in gwei #### Returns `bigint` Amount in wei #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const wei = FeeMarket.gweiToWei(1.5); // 1_500_000_000n ``` *** ### nextState() > **nextState**(`state`): [`State`](#state) Defined in: [src/primitives/FeeMarket/nextState.js:28](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/nextState.js#L28) Calculate next block's fee market state (standard form) Updates both EIP-1559 base fee and EIP-4844 blob base fee components. #### Parameters ##### state [`State`](#state) Current block state #### Returns [`State`](#state) Next block's state #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const currentState = { gasUsed: 20_000_000n, gasLimit: 30_000_000n, baseFee: 1_000_000_000n, excessBlobGas: 0n, blobGasUsed: 262144n }; const next = FeeMarket.nextState(currentState); ``` *** ### projectBaseFees() > **projectBaseFees**(`initialState`, `blocks`, `avgGasUsed`, `avgBlobGasUsed?`): `bigint`\[] Defined in: [src/primitives/FeeMarket/projectBaseFees.js:29](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/projectBaseFees.js#L29) Calculate series of future base fees (standard form) Useful for estimating fee trends over multiple blocks. #### Parameters ##### initialState [`State`](#state) Starting state ##### blocks `number` Number of blocks to project ##### avgGasUsed `bigint` Average gas used per block ##### avgBlobGasUsed? `bigint` = `0n` Average blob gas used per block #### Returns `bigint`\[] Array of future base fees #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const fees = FeeMarket.projectBaseFees( { gasUsed: 15_000_000n, gasLimit: 30_000_000n, baseFee: 1_000_000_000n, excessBlobGas: 0n, blobGasUsed: 0n }, 10, 25_000_000n, 262144n ); ``` *** ### validateState() > **validateState**(`state`): `string`\[] Defined in: [src/primitives/FeeMarket/validateState.js:20](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/validateState.js#L20) Validate block state #### Parameters ##### state [`State`](#state) Block state #### Returns `string`\[] Validation errors, empty array if valid #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const state = { gasUsed: 0n, gasLimit: 30000000n, baseFee: 1000000000n, excessBlobGas: 0n, blobGasUsed: 0n }; const errors = FeeMarket.validateState(state); ``` *** ### validateTxFeeParams() > **validateTxFeeParams**(`params`): `string`\[] Defined in: [src/primitives/FeeMarket/validateTxFeeParams.js:22](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/validateTxFeeParams.js#L22) Validate transaction fee parameters #### Parameters ##### params `any` Transaction fee parameters #### Returns `string`\[] Validation errors, empty array if valid #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const errors = FeeMarket.validateTxFeeParams({ maxFeePerGas: 2000000000n, maxPriorityFeePerGas: 1000000000n, baseFee: 800000000n }); ``` *** ### weiToGwei() > **weiToGwei**(`wei`): `string` Defined in: [src/primitives/FeeMarket/weiToGwei.js:17](https://github.com/evmts/voltaire/blob/bd6ec34405c15ad8cd51d11579d495dc53813482/src/primitives/FeeMarket/weiToGwei.js#L17) Convert wei to gwei for display #### Parameters ##### wei `bigint` Amount in wei #### Returns `string` Amount in gwei (formatted with 9 decimal places) #### See [https://voltaire.tevm.sh/primitives/feemarket](https://voltaire.tevm.sh/primitives/feemarket) for FeeMarket documentation #### Since 0.0.0 #### Throws #### Example ```javascript theme={null} import * as FeeMarket from './primitives/FeeMarket/index.js'; const gwei = FeeMarket.weiToGwei(1_500_000_000n); // "1.500000000" ``` ## References ### FeeMarketType Renames and re-exports [State](#state)