All-in-one digital precision for daily tasks and real-world engineering.
Spireix connects high-precision digital calculators, verified citizen & government portals, and professional IS-code civil engineering suites. Zero ads. Zero tracking. Zero lag.
Instant Indian GST & Reverse Tax Estimator
Smart Digital Calculators
Built to outperform cluttered legacy tools like Zoho and CNET with zero ads, instantaneous live keystroke math, and clean export options.
GST Calculator India
CGST, SGST, IGST calculations, reverse GST, interstate tax split, multi-item invoice builder, and one-click printable invoices.
Price per Kg / Kirana Calculator
Instantly find how many grams you get for your budget (₹50, ₹100), or calculate the exact rupee cost for any gram weight (250g, 1 pav, 500g).
Actual-Size Screen Caliper
True 1:1 millimeter and inch measurement right on your display. Calibrate with a credit card or coin with drag-to-measure vernier lines.
Age & Life Clock Calculator
Real-time ticking age counter in seconds, days lived, upcoming birthday countdown, life milestones, and planetary age comparisons.
10th & 12th Marks Percentage
Dynamic multi-subject percentage calculator, CBSE 5-subject rule, ICSE best-of-5, and CGPA to percentage conversion.
Discount & Margin Percentage
Calculate single and double stacked discounts (e.g. 50% + 20% off), tax adjustments, cost markup, and gross profit margins.
Citizen & Government Services (CSP)
Verified direct links to central and state citizen portals, accompanied by local in-browser document processing tools.
Central & State Portals
Instant access to Banglarbhumi, e-District, Parivahan, Food & Ration, EPFO, Income Tax, and Scholarship portals with category filters.
Smart PVC Card Cropper
Extract Front & Back of Aadhaar, Voter, PAN, and Ayushman cards to standard CR80 format at 300 DPI for physical PVC printing.
Passport Photo Sheet Maker
Upload a single portrait and generate ready-to-print 4×6 (6 or 8 photos) and A4 (12 or 16 photos) layout sheets at 300 DPI instantly.
Professional Civil Engineering Suite
Engineered according to Bureau of Indian Standards (IS 456, IS 10262, IS 800) with interactive structural diagrams and clean site reports.
Concrete Mix Design
M20 to M50 grade design, target mean strength, w/c ratio, and batch volume proportions.
RCC Beam Checker
Moment of resistance (Mu), limiting neutral axis depth, and shear reinforcement design.
Bar Bending Schedule
Compute cutting lengths with hook deductions, unit weight per meter (D²/162), and total tonnage.
Brick & Plaster Estimator
Total number of bricks, cement bags (50kg), and dry sand volume (m³ & cft) with wastage allowance.
Free Client-Side ATS Resume Checker
Audit your resume for Applicant Tracking Systems (ATS) formatting, contact clarity, section completeness, action verbs, and keyword density. Completely private — your resume never leaves your computer.
100% Client-Side Privacy
All calculations, PDF croppers, resume text analysis, and image operations execute inside your browser. No files are uploaded to any server.
Zero Ad Clutter
Unlike legacy calculator websites filled with banner ads, trackers, and popup redirects, Spireix offers a clean, ultra-fast interface.
Codified Standards
Our engineering tools are benchmarked against official Indian Standards (IS 456, IS 10262, IS 800) and verified for job-site compliance.