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Calculators

Ad Budget & Leads Calculator

Plan your Google or Meta ads budget: estimate clicks, leads, customers, cost per lead and revenue — or work backwards from your lead target.

100% free No sign-up Private — runs in your browser
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Estimated leads per month
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Clicks
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New customers
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Cost per lead
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Cost per customer
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Expected revenue
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ROAS
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How it works

How to Use the Ad Budget & Leads Calculator

Enter your budget

Monthly ad budget in ₹.

Add your assumptions

Average CPC, landing-page conversion rate and lead-to-sale rate.

Add order value

Average revenue per customer.

See the forecast

Clicks, leads, customers, cost per lead and expected revenue.

Why use it

Why Use Our Ad Budget & Leads Calculator

Full-funnel forecast

Budget → clicks → leads → customers → revenue.

Reverse planning

Find the budget needed for a target number of leads.

ROI estimate

Expected revenue and ROAS.

Instant

Updates live.

From the iSmartsLab team

Why iSmartsLab Built This Free Ad Budget & Leads Calculator

We are a digital marketing and website company in Bhubaneswar. We built this to solve a real problem for the students and businesses we meet.

Why we built it

The first question clients ask us is how much they should spend on ads. This tool shows how budget, clicks and leads connect.

How it works

Enter a budget, cost per click and conversion rate to estimate your clicks and leads. It runs in your browser.

How it helps you

You can set realistic targets before spending money, and see what must improve to reach your goal.

Want more traffic & leads?

Free tools help. Our SEO & website experts help more — get a free audit of your website.

How to plan your ad budget

Work backwards from your goal. If you need 20 new customers a month, close 25% of leads, and your landing page converts 8% of clicks, you need 80 leads and 1,000 clicks. At a ₹25 CPC that is a ₹25,000 monthly budget.

The formula

  • Clicks = Budget ÷ CPC
  • Leads = Clicks × Conversion rate
  • Customers = Leads × Close rate
  • Revenue = Customers × Average order value

Tips to get more leads from the same budget

  • Use dedicated landing pages instead of your homepage.
  • Add WhatsApp and click-to-call — many Indian customers prefer them to forms.
  • Follow up every lead within 5 minutes; speed doubles close rates.
  • Retarget visitors who did not convert.

Work backwards from your sales goal

Suppose you want 10 new customers a month:

  1. If 1 in 5 leads becomes a customer, you need 50 leads.
  2. If 5% of visitors become leads, you need 1,000 clicks.
  3. At ₹15 per click, your budget is about ₹15,000.

These numbers are only an example. Use your own data once your campaign has been running for a while.

How to split a small budget

Budget stageWhere to start
Small local budgetSearch ads for high-intent keywords, plus your Google Business Profile
GrowingAdd Instagram or Facebook lead ads and retargeting
EstablishedAdd YouTube, wider audiences and testing
Allow learning time: campaigns need data to improve, so avoid judging one after a few days unless something is clearly broken.

Want a realistic plan? Our team can review it through a Google Ads consultation.

01What budget should a small business start with?
Many local businesses in India start with ₹15,000–₹30,000 per month on Google or Meta ads, then scale what works.
02Are these numbers guaranteed?
No — they are estimates based on your inputs. Real CPCs and conversion rates vary by industry, competition and ad quality.
03How do I calculate my ad budget?
Start with your goal: customers needed ÷ lead-to-customer rate gives leads; leads ÷ conversion rate gives clicks; clicks × cost per click gives your budget.
04How much should a small business spend on digital marketing?
There is no single right amount. Start with a test budget you can afford to learn from, measure cost per lead, then increase spend on what is profitable.

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