Percent yield calculator

Calculate percent yield = actual product amount ÷ theoretical product amount × 100.

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Actual product amount

Theoretical product amount

Answer

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Calculate percent yield = actual product amount ÷ theoretical product amount × 100.

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Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Step-by-step calculation

Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Both amounts must refer to the same product and use the same unit. Values over 100% are displayed, not silently capped; they can reflect impurities, measurement error or inconsistent assumptions.

Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Use +, −, ×, ÷, parentheses and %. A percentage is divided by 100. This does not change the main tool.

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Updated 2026-09-26

Using Percent yield calculator

Calculate percent yield = actual product amount ÷ theoretical product amount × 100.

Both amounts must refer to the same product and use the same unit. Values over 100% are displayed, not silently capped; they can reflect impurities, measurement error or inconsistent assumptions.

Next: Theoretical yield calculator

A worked example

Example inputs: actual product amount = 8, theoretical product amount = 10. Percent yield = 80.

Before you use the result

Both amounts must refer to the same product and use the same unit. Values over 100% are displayed, not silently capped; they can reflect impurities, measurement error or inconsistent assumptions.

Example results for actual product amount

These examples use Theoretical product amount: 10. They are reference calculations, not recommended settings.

Actual product amount	Percent yield
4	40
8	80
16	160

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ToolOctopus. “Percent yield calculator.” Updated 2026-09-26. https://tooloctopus.com/percent-yield-calculator.

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