Free Grant Calculators
Interactive tools to help you estimate key federal grant budget figures, grant actions, and timelines.
De Minimis and Negotiated Indirect Rate with MTDC Calculator
Calculate Modified Total Direct Costs (MTDC), indirect costs using the de minimis rate or a negotiated rate, and your total project budget.
Open CalculatorGrant Budget Escalator Calculator
Project multi-year grant budgets with category-specific annual escalation rates, including personnel COLA, fringe tied to personnel, and one-time equipment costs.
Open CalculatorFederal Grant Personnel, FTE, and Level-of-Effort Calculator
Convert salaries and effort into person-months, salary, and fringe by grant year, with calendar, academic, and summer appointments, salary escalation, sponsor salary caps, and cost sharing.
Open CalculatorCost Share and Match Calculator
Calculate required cost share or match as a percentage of total project cost or of the Federal share, track cash and in-kind sources by year, screen each source against 2 CFR 200.306, and catch match gaps before you submit.
Open CalculatorFederal Reporting Deadlines on Awarded Grants
Based on the requirements of the federal 2 CFR 200 Uniform Guidance, your grant start date, and period of performance, this calculator provides a useful starting point for your implementation planning.
Open CalculatorFederal Per Diem Calculator for Business Trips
Look up official GSA per diem rates and calculate total travel reimbursement for grant-funded trips, including the 75% first/last-day M&IE reduction and meal deductions.
Open CalculatorFederal Procurement Threshold Calculator
Determine the correct procurement method for a planned purchase under 2 CFR § 200.320 — micro-purchase, simplified acquisition, or formal procurement — based on current federal thresholds.
Open CalculatorSingle Audit Threshold Checker
Check whether your federal expenditures trigger a single audit under 2 CFR 200.501, which threshold applies to your fiscal year ($750,000 or $1,000,000), and your audit submission deadline.
Open CalculatorLinking to these tools
Research offices, nonprofits, cities, counties, school districts, and charter schools are welcome to link to these calculators from their resource pages. You can copy the text below.
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These calculators are provided for planning purposes only and do not constitute financial or compliance advice. Results are estimates based on user-provided inputs and general assumptions; they may not reflect current federal, state, or agency-specific requirements. Always verify all figures against the official funding opportunity, applicable regulations (e.g., 2 CFR 200), and your organization's information. Grants Republic is not responsible for errors or outcomes resulting from reliance on this tool. Please see our full Terms of Use / Disclaimer page for more information.
Need help with your budget?
Our calculators are planning tools. If you would like professional support building a compliant federal grant budget, we are happy to talk. You can also browse our free grant guides & checklists or search for current RFP opportunities.