Apportionment Calculator Lite divides seats among states using the classic apportionment methods including the one that divides the U.S. House of Representatives and shows you exactly how each answer was reached.

It's made for students and teachers in math for liberal arts quantitative reasoning and political science courses and for anyone curious about how House seats are divided.

CALCULATE
Enter the number of seats and each state's population to get a clear table with every number along the way: the standard divisor each state's quota the modified divisor where there is one and the final seats.
• Exact math so there are no rounding errors and no trailing zeros
• If a method can't give an answer the app tells you why for example when two states are tied for the last seat or when there are fewer seats than states for a method that guarantees every state a seat

COMPARE
See methods side by side with any state that gets a different number of seats from most methods highlighted. Tap a method to open it.

LEARN
Each method is worked through step by step with your own numbers. You also get a short explanation of how it works and its history: who created it whether and when Congress used it and a fact worth knowing.

SAVED
• Every calculation is saved automatically (your last 50) and starred ones are kept for good
• Search rename and reopen past calculations
• Undo if you delete or clear something by accident

MAKE IT YOURS
Choose Graphite Blue Red Green or your device's own colors in light or dark mode.