Calculators

Calculate MPG, cost per mile, and total fuel cost for your trip.

Calculate acceleration and distance from initial/final velocity and time.

Calculate density from mass and volume. Compare with water density.

Convert frequency (Hz) to wavelength using the speed of light.

Calculate voltage using Ohm's Law (V = I × R) with power output.

Calculate the BTU (cooling capacity) needed for your room size.

Calculate speed from distance and time using the basic physics formula.

Calculate the time difference between two clock times.

Count business days between two dates (excludes weekends).

Calculate net profit, gross margin, and profit margin from revenue and costs.

Calculate the hourly rate needed to reach your annual income target.

Calculate invoice total with tax and discount applied.

Calculate how many months of runway you have based on cash and burn rate.

Calculate Monthly Recurring Revenue, ARR, and net MRR after churn.

Calculate LTV — total revenue expected from a customer over their lifetime.

Calculate your CAC — how much it costs to acquire one new customer.

Calculate net pay per pay period after taxes from annual salary.

Calculate yards of fabric needed based on dimensions and roll width.