https://publishing.co.uk/tags/margins/Recent content in Margins on publishing.co.uk — Professional KDP Book FormattingHugoen-gbSat, 21 Mar 2026 00:00:00 +0000https://publishing.co.uk/guides/kdp-margin-calculator/Sat, 21 Mar 2026 00:00:00 +0000https://publishing.co.uk/guides/kdp-margin-calculator/<style> .tool-container{max-width:800px;margin:0 auto 2rem} .tool-card-calc{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:2rem;margin:1.5rem 0;box-shadow:var(--shadow)} .tool-input-group{margin-bottom:1.25rem} .tool-input-group label{display:block;font-weight:600;margin-bottom:.5rem;font-size:.95rem} .tool-input-group input,.tool-input-group select{width:100%;padding:.75rem 1rem;border:1px solid var(--border);border-radius:var(--radius-sm);font-family:var(--font);font-size:1rem;background:var(--white);transition:border-color var(--transition)} .tool-input-group input:focus,.tool-input-group select:focus{outline:none;border-color:var(--indigo);box-shadow:0 0 0 3px rgba(107,33,168,.1)} .tool-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;border-radius:9999px;font-weight:600;font-size:.95rem;cursor:pointer;border:none;background:var(--indigo);color:var(--white);transition:all var(--transition);width:100%;justify-content:center} .tool-btn:hover{background:#5b1a91;transform:translateY(-1px);box-shadow:0 4px 12px rgba(107,33,168,.35)} .results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1rem;margin-top:1.5rem} .result-box{background:linear-gradient(135deg,#faf5ff,#f3e8ff);border:1px solid #e9d5ff;border-radius:var(--radius-sm);padding:1.25rem;text-align:center} .result-box .label{font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:.35rem} .result-box .value{font-size:1.75rem;font-weight:700;color:var(--indigo)} .result-box .sub{font-size:.82rem;color:var(--muted);margin-top:.25rem} .margin-table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.9rem} .margin-table th,.margin-table td{padding:.65rem 1rem;text-align:left;border-bottom:1px solid var(--border)} .margin-table th{background:#f8f5f0;font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)} .margin-table tr.active{background:#faf5ff;font-weight:600} .margin-table tr.active td{color:var(--indigo)} .tip-box{background:linear-gradient(135deg,#f0fdf4,#dcfce7);border:1px solid #bbf7d0;border-radius:var(--radius-sm);padding:1.25rem;margin:1.5rem 0} .tip-box strong{color:var(--emerald)} .cta-box{background:linear-gradient(135deg,var(--indigo),#5b1a91);color:var(--white);border-radius:var(--radius);padding:2rem;text-align:center;margin:2.5rem 0} .cta-box h3{color:var(--white);margin-bottom:.5rem} .cta-box p{color:rgba(255,255,255,.85);margin-bottom:1rem} .cta-box .btn{background:var(--white);color:var(--indigo);padding:.75rem 2rem;border-radius:9999px;font-weight:600;text-decoration:none;display:inline-block} .cta-box .btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,0,0,.2)} .related-tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin:1.5rem 0} .related-tool{border:1px solid var(--border);border-radius:var(--radius-sm);padding:1.25rem;text-align:center;transition:all var(--transition)} .related-tool:hover{border-color:var(--indigo);box-shadow:var(--shadow-md);transform:translateY(-2px)} .related-tool h4{font-size:.95rem;margin-bottom:.35rem} .related-tool p{font-size:.82rem;color:var(--muted);margin:0} </style> <p>Use this calculator to find the exact gutter margin Amazon KDP requires for your paperback. Enter your page count below and get instant results based on Amazon's official margin requirements.</p>