Annual income calculator: convert hourly, weekly, biweekly, and monthly pay
A transparent gross-income calculator specification with schedule, unpaid time, overtime, variable pay, and pay-frequency assumptions.
Is it right for you?
- Choose gross rate and pay basis
- Enter actual hours and paid weeks instead of hidden defaults
- Separate regular, overtime, bonus, commission, and other income
- Show annual, monthly, semimonthly, biweekly, weekly, and hourly equivalents
- Label estimates and exclude unsupported net-pay claims
Quick verdict
An annual income calculator should estimate gross income and expose every assumption. Hourly pay needs hours per week and paid weeks; salary needs pay periods; variable pay should be shown separately; and net income requires a different tax and deduction calculation. Never label hourly rate × 2,080 as a guarantee unless the worker is actually paid for 40 hours across 52 weeks.
Calculator inputs and outputs
Inputs: pay amount; hourly, daily, weekly, biweekly, semimonthly, monthly, or annual basis; regular hours per week; paid weeks per year; pay periods; expected overtime hours and rate only when known; and separately labeled variable income.
Outputs: regular annual gross, variable annual gross, combined annual gross, and equivalent amounts by selected frequency. Display the exact equation beside the result.
Core formulas
- Hourly annual gross = hourly rate × regular hours per week × paid weeks.
- Weekly annual gross = weekly amount × paid weeks.
- Biweekly annual gross = biweekly amount × actual pay periods, commonly but not always 26.
- Semimonthly annual gross = semimonthly amount × 24.
- Monthly annual gross = monthly amount × 12.
- Annual salary per pay period = annual salary ÷ actual pay periods.
If pay periods vary because of payroll calendars, use the employer's actual calendar. Do not treat biweekly and semimonthly as synonyms.
Overtime needs its own assumptions
For covered nonexempt employees, federal overtime generally applies after 40 hours in a workweek at not less than one and one-half times the regular rate. The regular rate can include more than the stated hourly rate [U.S. Department of Labor, 2026].
A general income calculator should either accept a user-supplied overtime rate or send the user to a dedicated overtime calculation. It should not infer legal eligibility, the regular rate, or state daily overtime.
Worked example
A worker earns $25 per hour, works 37.5 regular hours per week, and expects 50 paid weeks. The regular gross estimate is $25 × 37.5 × 50 = $46,875. If the user adds a separately expected $2,000 bonus, combined estimated gross is $48,875.
This example does not predict withholding or take-home pay and does not guarantee hours or bonus payment.
Gross, taxable, and net income are different
Gross income is the selected earnings total before displayed withholding and deductions. Taxable wage bases may differ by tax. Net pay depends on W-4 inputs, state and local rules, benefits, retirement, garnishments, and other facts.
The IRS directs employers to current withholding guidance and employees to review Form W-4 when circumstances change [IRS, 2026]. Keep this calculator focused on transparent gross conversion.
Frequently asked questions
Why is 2,080 hours not always correct? It assumes 40 paid hours for 52 weeks. Unpaid leave, variable schedules, and part-year work change the result.
How many biweekly paychecks are in a year? Often 26, but payroll calendars can create a different count; use the actual year.
Should bonuses be included? Show only an amount the user intentionally enters and label it variable or non-guaranteed.
Does annual income mean take-home pay? Not here. The calculator estimates gross income, not net pay.