Percentage Split Calculator
Split money, profits, or equity by 60/40, 70/30, 50/50, or custom ratios with penny-exact Hare-Niemeyer balancing.
Split formula
Proportional allocation calculates individual shares based on weight or target percentage:
Hare-Niemeyer largest remainder allocation guarantees the sum of all rounded cents equals 100% of the principal.
Percentage split examples
60 / 40 business partnership profit
Two partners distribute $12,500 in quarterly net profits.
3-way equal split on $100
Three roommates divide a $100.00 utility invoice evenly without losing cents.
Frequently asked questions
How do you calculate a 60/40 or 70/30 split?
Multiply the total amount by each party's percentage share (e.g. 60% = × 0.60, 40% = × 0.40). For example, splitting $10,000 on a 60/40 basis results in $6,000 and $4,000.
How does the largest-remainder method ensure shares sum exactly to the total?
When allocating rounded currency cents across 3 or more people (e.g., $100 split 3 ways), standard rounding leaves a 1-cent discrepancy ($33.33 × 3 = $99.99). The Hare-Niemeyer largest-remainder method allocates the remaining 1 cent to the party with the largest fractional remainder, guaranteeing exact dollar balancing.
Can I split amounts into unequal custom weights?
Yes. The calculator accepts any positive numeric weights or percentages. The system sums the total weights and calculates each party's proportional share automatically.
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