Commercial Rent Calculator: Monthly Rent & Price per Sq Ft
Calculate commercial base rent from rentable square footage and a quoted rate, or find the price per square foot from total base rent. Choose an annual or monthly quote basis and keep additional charges separate.
Calculate base rent and cost per square foot
Use the rentable area and quote basis stated in the lease or listing. This calculator does not determine local market rent, legal obligations, or the difference between usable and rentable area.
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Monthly base rent
- Annual base rent
- Base rate per square foot, monthly
- Base rate per square foot, annual
- Additional charges per month
- Additional charges per year
- Monthly rent plus entered charges
- Annual rent plus entered charges
Annual means 12 equal months at the entered rate, not a dated lease schedule. Money is rounded independently to cents; rates to four decimal places. Totals do not include any charge you have not entered. No escalation, free-rent period, deposit, tax rule, or percentage-rent provision is modeled.
Your entries are calculated in this browser. This tool does not save or send them. Google Blogger may separately provide its own platform services and cookies.
For worked examples, read our guide to calculating commercial rent per square foot.
How to calculate commercial rent per square foot
For an annual per-square-foot quote: annual base rent = rentable square feet x annual rate per square foot. Divide by 12 to find the monthly base rent.
Example: 1,000 square feet at $24 per square foot per year gives $24,000 per year and $2,000 per month, before additional charges. If separate charges total $250 per month, the entered monthly total becomes $2,250.
Annual and monthly quotes are different
A quote of $2 per square foot per month equals $24 per square foot per year. A quote of $24 per square foot per month is twelve times as large as $24 per square foot per year. Confirm the time basis rather than assuming every listing uses the same convention.
Find a rate from total rent
Rate per square foot = total base rent / rentable square feet, using the same period. A $2,000 monthly base rent for 1,000 square feet is $2 per square foot per month, equivalent to $24 per square foot per year. Keep separate charges out of this base-rate comparison.
Additional charges and lease terms
Commercial leases may allocate taxes, insurance, maintenance, common-area expenses, and other costs differently. A lease described as gross, modified gross, or net still needs its actual terms checked. Labels alone do not tell this tool which costs to add.
If an expense quote is $6 per square foot per year on 1,000 square feet, the total monthly expense estimate is $6 x 1,000 / 12 = $500. Enter $500 in the monthly charges field only if it is not already included. Do not enter the rate of $6 as though it were a $6 total monthly bill.
Frequently asked questions
Should I enter usable or rentable square footage?
Use the area to which the stated rent applies. Rentable area can include allocated common-area space, while usable area describes a different measure. This tool does not calculate a load factor or verify lease measurements.
Does it calculate NNN or CAM automatically?
No. Enter the appropriate total monthly charges separately after checking the lease. The calculator does not estimate or interpret NNN, CAM reconciliations, or tax obligations.
Can it handle rent increases or free months?
No. It compares a constant rate over 12 equal months. Lease incentives, escalations, partial months, and percentage rent need a separate schedule.
What input limits apply?
Area must be positive and at most one billion square feet, with four decimal places. Base rate may be zero to $1 million per square foot per quoted period, with four decimal places. Total base rent in reverse mode may be zero to $1 billion per quoted period, with two decimal places. Additional monthly charges may be zero to $100 million, with two decimal places. Annual base rent above $1 trillion is rejected. These are calculation limits, not market-price assumptions.
For measuring simple rectangular sections, use our Square Footage Calculator. Measured floor area is not automatically the rentable area in a lease.
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