Rent Increase Percentage Calculator
Calculate the percentage increase between your old rent and new rent. The calculator also shows the yearly impact and common period breakdowns.
Enter the old rent amount for the selected billing period.
Enter the new rent amount for the selected billing period.
Applies to both rent amounts.
Based on the old rent and new rent entered above.
4 weeks = 28 days. Average month = 30.42 days. Difference between monthly and 4-week amounts: old $158.90, new $166.85.
Breakdown across common periods
Both rent amounts are annualized first, then shown across common billing periods.
| Period | Old | New | Difference |
|---|---|---|---|
| Hourly | $2.74 | $2.88 | $0.14 |
| Daily | $65.75 | $69.04 | $3.29 |
| Weekly | $460.27 | $483.29 | $23.01 |
| 2 weeks | $920.55 | $966.58 | $46.03 |
| 4 weeks (28 days) | $1,841.10 | $1,933.15 | $92.05 |
| Monthly | $2,000.00 | $2,100.00 | $100.00 |
| Annual | $24,000.00 | $25,200.00 | $1,200.00 |
How this calculator worksRent increase percentage calculator
Enter the starting rent and new rent for the same payment period to find the arithmetic percentage change and the absolute difference.
What this calculation clarifies
- 1Start with old and new rent
The starting rent is the comparison base. The new rent is the amount after the change; both inputs must use the same payment period.
- 2Reverse percentage formula
Percentage increase = (new rent − old rent) ÷ old rent × 100. The calculator also shows the absolute and annualized differences.
- 3A zero starting rent has no meaningful percentage
When old rent is zero, it cannot be used as the divisor for a percentage comparison. The calculator reports the absolute change instead.
Worked examples
The change is $100. Dividing $100 by the $2,000 starting rent and multiplying by 100 gives a 5% increase.
Compare monthly rent with monthly rent, or weekly rent with weekly rent. Mixing periods would produce a misleading percentage.
The percentage describes the numeric change between the amounts. It does not determine whether that change is legally permitted.
Useful context
- Use the forward rent increase calculator when you know a percentage or fixed amount and need the resulting rent.
- This route does not add a proposed increase to rent; it measures the change between two entered amounts.
Related calculators
When rent increase context helps
- Finding the percentage change when old and new rent are known.
- Checking the absolute and annualized difference between two rent amounts.
- Comparing like-for-like rent amounts that use the same payment period.
Check before relying on it
- Local law and lease terms can control whether an increase is allowed. This page only calculates the numbers.