Nonprofit Calculators
Annual Fund Goal Calculator
Track progress toward a fundraising goal and calculate the required daily pace needed to close the gap before the campaign deadline.
Average Gift Size Calculator
Calculate average gift size from total donations and number of gifts to track fundraising trends over time.
Board Giving Participation Calculator
Calculate the percentage of board members who personally donate, a key credibility metric many funders check before giving.
Cost Per Dollar Raised Calculator
Calculate cost per dollar raised from fundraising costs and total funds raised to compare campaign efficiency across different channels.
Donation Matching Calculator
Calculate the matched amount and total raised from a donation, match ratio, and optional match cap used in matching gift campaigns.
Donor Acquisition Cost Calculator
Calculate the average cost to acquire each new donor from total acquisition campaign cost and number of new donors gained.
Donor Lifetime Value Calculator
Calculate donor lifetime value from average annual gift and average donor lifespan to inform fundraising and acquisition budgets.
Donor Retention Calculator
Calculate donor retention and attrition rate from prior year and repeat donor counts, a leading indicator of long-term fundraising sustainability.
Endowment Spending Rate Calculator
Calculate an endowment's annual spending rate from the annual draw amount and total endowment balance to check long-term sustainability.
Event Fundraising Net Profit Calculator
Calculate net profit and profit margin for a fundraising event from total revenue and total expenses.
Fundraising Event Breakeven Calculator
Calculate the minimum number of ticket sales needed for a fundraising event to cover its fixed costs using standard break-even analysis.
Fundraising ROI Calculator
Calculate fundraising ROI from funds raised and campaign costs to see how much return each dollar of fundraising spend actually generated for the organization.
Grant Success Rate Calculator
Calculate your organization's grant success rate from grants awarded and grants applied for to benchmark grant-seeking strategy.
Membership Growth Calculator
Calculate membership growth or decline rate between two periods to track how an organization's supporter base is trending over time.
Membership Renewal Rate Calculator
Calculate membership renewal rate from members renewed and members eligible for renewal to track retention performance.
Nonprofit Budget Calculator
Calculate net surplus or deficit and the program, administrative, and fundraising expense breakdown from a nonprofit's revenue and costs.
Nonprofit Overhead Ratio Calculator
Calculate a nonprofit's overhead ratio from administrative and fundraising expenses against total spending, the figure donors and watchdogs check first.
Program Expense Ratio Calculator
Calculate the share of total spending that goes directly to programs versus overhead, a key input to public charity efficiency ratings.
Suggested Ask Amount Calculator
Calculate a suggested next ask amount for a returning donor based on their last gift and a standard percentage increase.
Volunteer Hours Value Calculator
Estimate the dollar value of volunteer hours using a custom rate or the Independent Sector's published national hourly value estimate.
Trust, Measured in Ratios
Donors increasingly check a nonprofit's efficiency before giving — how much of every dollar actually reaches the mission versus overhead. These ten calculators cover the budget and efficiency math nonprofits are judged by.
What Counts as "Efficient" Overhead
That said, an overhead ratio far below reasonable levels can also be a red flag — it sometimes means underinvestment in the staff, systems, and fundraising infrastructure a nonprofit needs to operate sustainably at scale. Calculate your own ratio with the Nonprofit Overhead Ratio Calculator or Program Expense Ratio Calculator.
Popular Nonprofit Calculators
- Donor Retention Calculator — calculates the percentage of donors who gave again in a following period.
- Fundraising ROI Calculator — measures funds raised relative to fundraising campaign cost.
- Volunteer Hours Value Calculator — estimates the dollar value of donated volunteer time using standard rate references.
Related: Grant & Funding Calculators for grant-specific budget math.