RA

Fast online calculators across finance, health, time, math, science and more.

Business & finance

Accounting Calculator

Net/gross amounts, markup and margin in one clean workspace.

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Perfect for quick “what-if” pricing and invoicing.

Line-wise accounting calculators

Markup, margin and tax helpers — the small pieces you use every day when pricing or reviewing invoices.

Markup calculator

Cost a with markup % b → selling price.

+%=
Margin calculator

Selling price a and cost b → margin %.

&= %
Net to gross (tax)

Net amount a with tax % b → gross.

+VAT=
Gross to net (tax)

Gross amount a with tax % b → net.

-VAT=